diff options
Diffstat (limited to 'sysdeps/m68k')
| -rw-r--r-- | sysdeps/m68k/fpu/bits/mathinline.h | 31 | ||||
| -rw-r--r-- | sysdeps/m68k/fpu/s_frexp.c | 27 | ||||
| -rw-r--r-- | sysdeps/m68k/fpu/s_frexpl.c | 62 |
3 files changed, 83 insertions, 37 deletions
diff --git a/sysdeps/m68k/fpu/bits/mathinline.h b/sysdeps/m68k/fpu/bits/mathinline.h index 4b1bfeaf13..ec00b4b711 100644 --- a/sysdeps/m68k/fpu/bits/mathinline.h +++ b/sysdeps/m68k/fpu/bits/mathinline.h @@ -1,5 +1,6 @@ /* Definitions of inline math functions implemented by the m68881/2. - Copyright (C) 1991,92,93,94,96,97,98,99,2000,2002 Free Software Foundation, Inc. + Copyright (C) 1991,92,93,94,96,97,98,99,2000,2002, 2003 + Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -176,28 +177,6 @@ __inline_mathop(trunc, intrz) for the function names. */ #define __inline_functions(float_type, s) \ -__m81_inline float_type \ -__m81_u(__CONCAT(__frexp,s))(float_type __value, int *__expptr) __THROW \ -{ \ - float_type __mantissa, __exponent; \ - int __iexponent; \ - unsigned long __fpsr; \ - __asm("ftst%.x %1\n" \ - "fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value)); \ - if (__fpsr & (7 << 24)) \ - { \ - /* Not finite or zero. */ \ - *__expptr = 0; \ - return __value; \ - } \ - __asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value)); \ - __iexponent = (int) __exponent + 1; \ - *__expptr = __iexponent; \ - __asm("fscale%.l %2, %0" : "=f" (__mantissa) \ - : "0" (__value), "dmi" (-__iexponent)); \ - return __mantissa; \ -} \ - \ __m81_defun (float_type, __CONCAT(__floor,s), (float_type __x)) __THROW \ { \ float_type __result; \ @@ -386,8 +365,6 @@ extern __inline rettype name args1 __THROW \ return __CONCAT(__,name) args2; \ } -__inline_forward(double,frexp, (double __value, int *__expptr), - (__value, __expptr)) __inline_forward_c(double,floor, (double __x), (__x)) __inline_forward_c(double,ceil, (double __x), (__x)) # ifdef __USE_MISC @@ -416,8 +393,6 @@ __inline_forward(void,sincos, (double __x, double *__sinx, double *__cosx), # if defined __USE_MISC || defined __USE_ISOC99 -__inline_forward(float,frexpf, (float __value, int *__expptr), - (__value, __expptr)) __inline_forward_c(float,floorf, (float __x), (__x)) __inline_forward_c(float,ceilf, (float __x), (__x)) # ifdef __USE_MISC @@ -438,8 +413,6 @@ __inline_forward(void,sincosf, (float __x, float *__sinx, float *__cosx), (__x, __sinx, __cosx)) # endif -__inline_forward(long double,frexpl, (long double __value, int *__expptr), - (__value, __expptr)) __inline_forward_c(long double,floorl, (long double __x), (__x)) __inline_forward_c(long double,ceill, (long double __x), (__x)) # ifdef __USE_MISC diff --git a/sysdeps/m68k/fpu/s_frexp.c b/sysdeps/m68k/fpu/s_frexp.c index 0cdb5778ee..b06141283c 100644 --- a/sysdeps/m68k/fpu/s_frexp.c +++ b/sysdeps/m68k/fpu/s_frexp.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -28,11 +28,28 @@ #define __CONCATX(a,b) __CONCAT(a,b) float_type -__CONCATX(__,FUNC) (value, expptr) - float_type value; - int *expptr; +__CONCATX(__,FUNC) (float_type value, int *expptr) { - return __m81_u(__CONCATX(__,FUNC))(value, expptr); + float_type mantissa, exponent; + int iexponent; + unsigned long fpsr; + + __asm ("ftst%.x %1\n" + "fmove%.l %/fpsr, %0" + : "=dm" (fpsr) : "f" (value)); + if (fpsr & (7 << 24)) + { + /* Not finite or zero. */ + *expptr = 0; + return value; + } + __asm ("fgetexp%.x %1, %0" : "=f" (exponent) : "f" (value)); + iexponent = (int) exponent + 1; + *expptr = iexponent; + __asm ("fscale%.l %2, %0" + : "=f" (mantissa) + : "0" (value), "dmi" (-iexponent)); + return mantissa; } #define weak_aliasx(a,b) weak_alias(a,b) diff --git a/sysdeps/m68k/fpu/s_frexpl.c b/sysdeps/m68k/fpu/s_frexpl.c index fe9466f3be..f9a5315265 100644 --- a/sysdeps/m68k/fpu/s_frexpl.c +++ b/sysdeps/m68k/fpu/s_frexpl.c @@ -1,3 +1,59 @@ -#define FUNC frexpl -#define float_type long double -#include <s_frexp.c> +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <math.h> + +long double +__frexpl (long double value, int *expptr) +{ + long double mantissa, exponent; + int iexponent; + unsigned long fpsr; + + __asm ("ftst%.x %1\n" + "fmove%.l %/fpsr, %0" + : "=dm" (fpsr) : "f" (value)); + if (fpsr & (7 << 24)) + { + /* Not finite or zero. */ + *expptr = 0; + return value; + } + __asm ("fgetexp%.x %1, %0" : "=f" (exponent) : "f" (value)); + iexponent = (int) exponent + 1; + *expptr = iexponent; + /* Unnormalized numbers must be handled specially, otherwise fscale + results in overflow. */ + if (iexponent <= -16384) + { + value *= 0x1p16383L; + iexponent += 16383; + } + else if (iexponent >= 16384) + { + value *= 0x1p-16383L; + iexponent -= 16383; + } + + __asm ("fscale%.l %2, %0" + : "=f" (mantissa) + : "0" (value), "dmi" (-iexponent)); + return mantissa; +} + +weak_alias (__frexpl, frexpl) |